# On macOS with Homebrew -weight: 500;">brew -weight: 500;">install -weight: 500;">docker -weight: 500;">docker-compose -weight: 500;">kubectl helm terraform kind gh # Or use official installers: # - Docker: https://docs.-weight: 500;">docker.com/get--weight: 500;">docker/ # - -weight: 500;">kubectl: https://kubernetes.io/docs/tasks/tools/-weight: 500;">install--weight: 500;">kubectl/ # - Terraform: https://developer.hashicorp.com/terraform/downloads # - Kind: https://kind.sigs.k8s.io/docs/user/quick--weight: 500;">start/#installation # On macOS with Homebrew -weight: 500;">brew -weight: 500;">install -weight: 500;">docker -weight: 500;">docker-compose -weight: 500;">kubectl helm terraform kind gh # Or use official installers: # - Docker: https://docs.-weight: 500;">docker.com/get--weight: 500;">docker/ # - -weight: 500;">kubectl: https://kubernetes.io/docs/tasks/tools/-weight: 500;">install--weight: 500;">kubectl/ # - Terraform: https://developer.hashicorp.com/terraform/downloads # - Kind: https://kind.sigs.k8s.io/docs/user/quick--weight: 500;">start/#installation # On macOS with Homebrew -weight: 500;">brew -weight: 500;">install -weight: 500;">docker -weight: 500;">docker-compose -weight: 500;">kubectl helm terraform kind gh # Or use official installers: # - Docker: https://docs.-weight: 500;">docker.com/get--weight: 500;">docker/ # - -weight: 500;">kubectl: https://kubernetes.io/docs/tasks/tools/-weight: 500;">install--weight: 500;">kubectl/ # - Terraform: https://developer.hashicorp.com/terraform/downloads # - Kind: https://kind.sigs.k8s.io/docs/user/quick--weight: 500;">start/#installation mkdir my-devops-app && cd my-devops-app touch app.py Dockerfile mkdir my-devops-app && cd my-devops-app touch app.py Dockerfile mkdir my-devops-app && cd my-devops-app touch app.py Dockerfile from flask import Flask app = Flask(__name__) @app.route("/") def home(): return "<h1>Hello from DevOps 2026! 🚀</h1>" if __name__ == "__main__": app.run(host="0.0.0.0", port=5000) from flask import Flask app = Flask(__name__) @app.route("/") def home(): return "<h1>Hello from DevOps 2026! 🚀</h1>" if __name__ == "__main__": app.run(host="0.0.0.0", port=5000) from flask import Flask app = Flask(__name__) @app.route("/") def home(): return "<h1>Hello from DevOps 2026! 🚀</h1>" if __name__ == "__main__": app.run(host="0.0.0.0", port=5000) FROM python:3.11-slim WORKDIR /app COPY requirements.txt . RUN -weight: 500;">pip -weight: 500;">install -r requirements.txt COPY . . EXPOSE 5000 CMD ["python", "app.py"] FROM python:3.11-slim WORKDIR /app COPY requirements.txt . RUN -weight: 500;">pip -weight: 500;">install -r requirements.txt COPY . . EXPOSE 5000 CMD ["python", "app.py"] FROM python:3.11-slim WORKDIR /app COPY requirements.txt . RUN -weight: 500;">pip -weight: 500;">install -r requirements.txt COPY . . EXPOSE 5000 CMD ["python", "app.py"] Flask==3.0.3 Flask==3.0.3 Flask==3.0.3 # Build the image -weight: 500;">docker build -t my-web-app:latest . # Run the container -weight: 500;">docker run -d -p 5000:5000 my-web-app:latest # Build the image -weight: 500;">docker build -t my-web-app:latest . # Run the container -weight: 500;">docker run -d -p 5000:5000 my-web-app:latest # Build the image -weight: 500;">docker build -t my-web-app:latest . # Run the container -weight: 500;">docker run -d -p 5000:5000 my-web-app:latest cat <<EOF | kind create cluster --config=- kind: Cluster apiVersion: kind.x-k8s.io/v1alpha4 nodes: - role: control-plane kubeadmConfigPatches: - | kind: InitConfiguration nodeRegistration: kubeletExtraArgs: node-labels: "ingress-ready=true" extraPortMappings: - containerPort: 80 hostPort: 80 protocol: TCP - containerPort: 443 hostPort: 443 protocol: TCP EOF cat <<EOF | kind create cluster --config=- kind: Cluster apiVersion: kind.x-k8s.io/v1alpha4 nodes: - role: control-plane kubeadmConfigPatches: - | kind: InitConfiguration nodeRegistration: kubeletExtraArgs: node-labels: "ingress-ready=true" extraPortMappings: - containerPort: 80 hostPort: 80 protocol: TCP - containerPort: 443 hostPort: 443 protocol: TCP EOF cat <<EOF | kind create cluster --config=- kind: Cluster apiVersion: kind.x-k8s.io/v1alpha4 nodes: - role: control-plane kubeadmConfigPatches: - | kind: InitConfiguration nodeRegistration: kubeletExtraArgs: node-labels: "ingress-ready=true" extraPortMappings: - containerPort: 80 hostPort: 80 protocol: TCP - containerPort: 443 hostPort: 443 protocol: TCP EOF -weight: 500;">kubectl cluster-info --context kind-kind -weight: 500;">kubectl cluster-info --context kind-kind -weight: 500;">kubectl cluster-info --context kind-kind apiVersion: apps/v1 kind: Deployment metadata: name: web-app spec: replicas: 2 selector: matchLabels: app: web-app template: metadata: labels: app: web-app spec: containers: - name: web-app image: my-web-app:latest ports: - containerPort: 5000 --- apiVersion: v1 kind: Service metadata: name: web-app--weight: 500;">service spec: selector: app: web-app ports: - protocol: TCP port: 80 targetPort: 5000 type: LoadBalancer apiVersion: apps/v1 kind: Deployment metadata: name: web-app spec: replicas: 2 selector: matchLabels: app: web-app template: metadata: labels: app: web-app spec: containers: - name: web-app image: my-web-app:latest ports: - containerPort: 5000 --- apiVersion: v1 kind: Service metadata: name: web-app--weight: 500;">service spec: selector: app: web-app ports: - protocol: TCP port: 80 targetPort: 5000 type: LoadBalancer apiVersion: apps/v1 kind: Deployment metadata: name: web-app spec: replicas: 2 selector: matchLabels: app: web-app template: metadata: labels: app: web-app spec: containers: - name: web-app image: my-web-app:latest ports: - containerPort: 5000 --- apiVersion: v1 kind: Service metadata: name: web-app--weight: 500;">service spec: selector: app: web-app ports: - protocol: TCP port: 80 targetPort: 5000 type: LoadBalancer -weight: 500;">kubectl apply -f deployment.yaml -weight: 500;">kubectl apply -f deployment.yaml -weight: 500;">kubectl apply -f deployment.yaml -weight: 500;">kubectl get pods,svc -weight: 500;">kubectl get pods,svc -weight: 500;">kubectl get pods,svc -weight: 500;">git init -weight: 500;">git add . -weight: 500;">git commit -m "Initial commit" gh repo create my-devops-app --public --push -weight: 500;">git init -weight: 500;">git add . -weight: 500;">git commit -m "Initial commit" gh repo create my-devops-app --public --push -weight: 500;">git init -weight: 500;">git add . -weight: 500;">git commit -m "Initial commit" gh repo create my-devops-app --public --push name: CI on: push: branches: [ main ] jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - name: Set up Docker uses: -weight: 500;">docker/setup-qemu-action@v3 with: platforms: linux/amd64 - name: Build Docker image run: | -weight: 500;">docker build -t my-web-app:latest . -weight: 500;">docker run -d -p 5000:5000 my-web-app:latest sleep 5 -weight: 500;">curl http://localhost:5000 || exit 1 name: CI on: push: branches: [ main ] jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - name: Set up Docker uses: -weight: 500;">docker/setup-qemu-action@v3 with: platforms: linux/amd64 - name: Build Docker image run: | -weight: 500;">docker build -t my-web-app:latest . -weight: 500;">docker run -d -p 5000:5000 my-web-app:latest sleep 5 -weight: 500;">curl http://localhost:5000 || exit 1 name: CI on: push: branches: [ main ] jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - name: Set up Docker uses: -weight: 500;">docker/setup-qemu-action@v3 with: platforms: linux/amd64 - name: Build Docker image run: | -weight: 500;">docker build -t my-web-app:latest . -weight: 500;">docker run -d -p 5000:5000 my-web-app:latest sleep 5 -weight: 500;">curl http://localhost:5000 || exit 1